[XinzheWang]

Hi

I have some issues when running LTE_sim_main_launcher_demo_RRH, i often get the message :

.Entering main simulation loop, 100 TTIs
TTI 1/100: *****带有下标的赋值维度不匹配。

出错 phy_modeling.post_equalization_SINR (line 43)
TX_W_half_RB_i(i_,1:2:end,:, 🙂 = TX_W_RB_i/(2);

出错 network_elements.UE/link_quality_model_v2 (line 730)
[TB_SINR_lin, RX_total_half_RB_layers_UE, RX_W_half_RB_i_UE] = phy_modeling.post_equalization_SINR(…

出错 network_elements.UE/link_quality_model (line 274)
obj.link_quality_model_v2(config,before_FB);

出错 LTE_sim_main (line 402)
UEs(u_).link_quality_model(LTE_config,false);

出错 LTE_sim_main_launcher_demo_RRH (line 71)
output_results_file = LTE_sim_main(LTE_config);

Best regards,
Xinzhe Wang.

[Martin Taranetz]

Dear Xinzhe Wang,

try to use the command dbstop ‘if error’.
This well enable you to evaluate the content of TX_W_RB_i before the error is thrown.

Best regards,
Martin.

[XinzheWang]

Dear Martin,

thanks for your direction. I do as you say and i learn the content of TX_W_RB_i before the error is thrown,
but i don’t know what is the relationship between the dimensionality of TX_W_RB_i with TTI.

Best regards,
Xinzhe Wang.

[XinzheWang]

Dear Martin,

I don’t understand the LTE System Level Simulator v1.8, so i run LTE_System_Level_1.6_r885_light, it shows the following errors:
Saving results to 2.14GHz_freq_20fMHz_bw_winner+_5.0Kmph_10TTIs_20160225_133733_lab01_prop_fair_Sun_2x2CLSM_precomputed_precoding_r885_tri_sector_tilted.mat
错误使用 save
无法写入文件 .\results\2.14GHz_freq_20fMHz_bw_winner+_5.0Kmph_10TTIs_20160225_133733_lab01_prop_fair_Sun_2x2CLSM_precomputed_precoding_r885_tri_sector_tilted.mat: No such file or directory。

出错 LTE_sim_main (line 431)
save(fullfile(LTE_config.results_folder,LTE_config.results_file),’LTE_config’,’networkPathlossMap’,’eNodeBs’,’eNodeBs_sectors’,’UEs’,’FFR_UE_mapping’,’the_UE_traces’,’the_eNodeB_traces’,’extra_UE_info’,’finish_time_s_full’,’-v7.3′);

出错 LTE_sim_main_launcher_examples (line 41)
output_results_file = LTE_sim_main(LTE_config);

but i find in the code:
%% Where to save the results
LTE_config.results_folder = ‘./results’;
LTE_config.results_file = ‘auto’; % NOTE: ‘auto’ assigns a filename automatically
why it can’t save? could you help me ?

Best regards,
Xinzhe Wang.

[Martin Taranetz]

Dear Xinzhe Wang,

I couldn’t reproduce your error yet.
Please, try to run a different launcher and set a breakpoint at phy_modeling.post_equalization_SINR (line 43).
Then, check out the dimensions of TX_W_RB_i. In the next step, run the RRH launcher again and figure out the difference.

Best regards,
Martin.

[XinzheWang]

Dear Martin,

thanks for your direction. Before your answer,I watch access-gavideo and I find the LTE System Level Simulator v1.8 that has been downloaded is different from that described in the video.
The video is downloaded from http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7113789&tag=1.My LTE System Level Simulator v1.8 lack some subfiles ,such as non_public_utils, svn, improvement list and eval_MBSFN.m ,LTE_init_car_users.m and so on. It also lacks something about MBSFN in the subfiles.I download the LTE System Level Simulator v1.8 from https://www.nt.tuwien.ac.at/research/mobile-communications/vienna-lte-a-simulators/.I wonder that my error maybe stem from the imperfection of files. Can you send me the latest version and complete information? I will try to do what you say and
observe results.Thanks for your help again.

Best regards,
Xinzhe Wang.

[Martin Taranetz]

Dear Xinzhe Wang,

these folders were deleted on purpose, as their content is not intended for public use.
They do, however, not influence the functionality of the simulator.

Best regards,
Martin.

[XinzheWang]

Dear Martin

Now i know. I will try and thank you.

Best regards,
Xinzhe Wang.

[XinzheWang]

Dear Martin

I try to run all launchers and set a breakpoint at phy_modeling.post_equalization_SINR (line 43).
But i find all launchers except the RRH launcher have nothing with the dimensions of TX_W_RB_i. I can not figure out the difference and not solve the problem.
Beyond that, when i run the parallel launcher, I meet errors:

未定义变量 “simulation_config” 或函数 “simulation_config.MBSFN_test.apply_parameters”。

出错 LTE_sim_main_launcher_demo_parallel (line 10)
LTE_config = simulation_config.MBSFN_test.apply_parameters;

I think it comes from the lack of simulation_config.MBSFN_test.m and I try to change the source code ,i.e. change:
%% Load simulation parameters
% LTE_config = LTE_load_params(simulation_type);
LTE_config = simulation_config.MBSFN_test.apply_parameters;
% LTE_config.keep_UEs_still = true;

into
%% Load simulation parameters
LTE_config = LTE_load_params(simulation_type);
% LTE_config = simulation_config.MBSFN_test.apply_parameters;
LTE_config.keep_UEs_still = true;
It works but i am not sure that the results are correct. Do you think that it is right?

When i run the stochastic_network launcher, I meet errors:
错误使用 LTE_load_params_dependant (line 485)
When specifying a “claussen” shadow fading map, the following parameters need to be specified:
LTE_config.shadow_fading_map_resolution
LTE_config.shadow_fading_n_neighbors
LTE_config.shadow_fading_mean
LTE_config.shadow_fading_sd
LTE_config.r_eNodeBs

The source code is:

% General parameters
LTE_config.map_resolution = 5;
LTE_config.shadow_fading_type = ‘claussen’;
LTE_config.shadow_fading_sd = 3; % according to 6 dB variance
LTE_config.simulation_time_tti = 10;
LTE_config.compute_only_center_users = true; % Inclusion radius set in LTE_init_determine_eNodeBs_to_compute.m
LTE_config.compact_results_file = false;
LTE_config.keep_UEs_still = true;

Can you give me the complete parameters information?

When i run the LTE_sim_main_launcher_demo_tx_mode_9 launcher, I meet errors:

out of memory.

I change the LTE_config.nr_eNodeB_rings = 2 into LTE_config.nr_eNodeB_rings = 1,but meet the same error. I do not how to do.

Hope for your help!

Best regards,
Xinzhe Wang.

[XinzheWang]

Dear Martin

Can you send me some launchers about CoMP? I need it and thank you !

Best regards,
Xinzhe Wang.

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